The Rail Mount QD Sling Swivel Attachment Point With Swivel is designed to install on any MIL-STD-1913 picatinny rail or handguard. This mount includes a push button quick detach (QD) Sling Swivel which accepts sling straps up to 1.25". Made from black hard anodized aircraft grade aluminum. Push button sling swivel for Picatinny Rail is compatible with standard QD slings and loop.